Chapter 170 [The Warm Senior]

Yenching, Huaqing University.

At six o'clock in the morning, Lin Shu woke up from his sleep, full of energy. He heard the pattering sound outside, which seemed to be raining. He glanced outside the balcony, and it seemed to be raining outside. The cold wind was picking up, and there was a chill outside.

Although the quilt is very warm, Lin Shu still got up. This feeling is really amazing. If he changed it before, he might continue to spend a long time with the warm quilt, but now he can really Resolutely cut off the tenderness between him and the bed, be a scumbag, leave the bed decisively, and sort out the relationship with the bed, and make the bed.

Lin Shu climbed down from the bed as quietly as possible, and while stepping on the ladder, Liu Zheng, who was sleeping on the other side, asked in a daze, "It's raining today, why did you get up so early?"

Lin Shu nodded, trying not to wake up the other two sleeping geniuses.

Liu Zheng also admired that Lin Shu is really too self-disciplined. He wakes up at this time every day, and then goes to run and study. The key point is that Lin Shu is not only studying all the time, but Lin Shu also participates in normal entertainment activities.

Liu Zheng felt that he had worked very hard, but compared with Lin Shu, he was really far behind.

No wonder it is now rumored that Lin Shu is a study madman, and Lin Shu can often be seen studying.

After Lin Shu washed up, he looked at the class schedule, packed his books, and went out with an umbrella on his back.

Although it was raining, Lin Shu felt that he could still go to the library to study.

It was raining heavily in Yanjing in September, and the sky was dark and deserted.

When Lin Shu went to the cafeteria to buy breakfast with an umbrella, he saw many students going to the library along the way. Many of them looked very young, and they were all in their prime. Most of them looked like undergraduate students. .

Lin Shu had to admit that those people worked harder and worked harder than him.

What I am most afraid of is this kind of person, who is smarter than him and works harder than him, it really makes people feel pressured.

Lin Shu knew very well that most of these undergraduate students had high scores in the college entrance examination. You should know that his grades were good, but he didn't get into a school like Huaqing in the college entrance examination. When he was in high school, he belonged to the kind of student who had good grades, but was not good enough to go to Huaqing.

However, in his college entrance examination, no one in the school was admitted to Huaqing and Yanjing, the two top universities in his memory. The first place in his impression seems to be Jiangsu and Zhejiang University.

Lin Shu shook his head and stopped thinking about it. After waiting for the library to open, he started his own study. Although it was said that the postgraduate direction that Lin Shu followed was related to parallel robots, Lin Shu also followed at Shonan University before that. The mentor identified research in machine vision inspection.

Although Shu Lin dropped out of school later, he felt that that part of the research naturally could not be given up. He could still sort out the previous topics and try to publish a paper on the continuous motion thread size adaptive machine vision inspection.

Threaded parts have the advantages of reliable structure, high stability, and smooth transmission in the manufacturing industry, and they are also an important role in the manufacturing industry. Especially with the improvement of mechanical equipment's requirements for thread size accuracy, strict screening of threaded parts is required. In Lin Shu's view, the current inspection of key dimensions of threaded parts is mainly manual mechanical inspection and machine vision inspection, but compared with the existing machine vision inspection, it is still a direction that can be improved, and this direction is what Lin Shu said before. The research direction is about the continuous motion thread size adaptive machine vision inspection method.

Lin Shu here is in the process of consulting materials and studying, so he also brushes up experience.

"Senior Lin Shu, I'm sorry to bother you, can I ask you a question?"

A round-faced girl beside her looked at Lin Shu and asked a question.

Lin Shu was a little surprised. Seeing the girl wearing a coat and neck-length short hair, it was obvious that the girl called him senior Lin Shu instead of senior because she knew him.

【Ding! NPC passer-by Jiang Shan’s requested task: guide her to do math problems, complete rewards 1. Jiang Shan’s favorability +5; 2. Experience +580; 3. Gold coins +58.]

Lin Shu was not surprised by such a request task. You must know that he was trying to pull the wool of a sheep at the beginning, but now that he has such experience points, how could he not be able to use it.

Lin Shu put down the book in his hand, nodded, and said, "Yes."

When the girl Jiang Shan heard Lin Shu's words, a smile appeared on her face instantly, and she was also relieved.

"It's the math problem for the postgraduate entrance examination."

Jiang Shan came to the topic and said: "Senior, I am reviewing for the postgraduate entrance examination now, and I feel that high math is difficult."

Lin Shu didn't pay attention to what the girl said behind him. He just started to look at the math question asked by the girl, and raised his eyebrows. Although he said that he was not a math major, he had taken the postgraduate entrance examination twice after all, and his scores were very high. He should have done a similar topic before, which is a topic related to the median value theorem of calculus.

f(x) has an order continuous derivative on (-∞, +∞), f′(1/2)=0, prove that there exists ε∈(0, 1/2) so that f′(ε)=2ε[f( ε)—f(0)].

Without any particular hesitation, Lin Shu thought about it carefully, and then said: "It's very simple, you set F(x)=f '(x)-2x[f(x)-f(0)]F(0)= f '(0)F(1/2)=f(0)-f(1/2) may wish to set f '(0)>0, that is, F(0)>0 if f '(0) is in ( 0, 1/2), then f(1/2)>f(0) and therefore F(0)>0>F(1/2), according to the intermediate value theorem, there exists ε∈(0 , 1/2), so that F(ε)=0, then f′(ε)=2ε[f(ε)—……”

"That's it."

Lin Shu wrote out Jiang Shan's proof process in detail on the draft paper, and then asked, "Do you understand?"

"Understood, thank you senior."

Jiang Shan nodded again and again, thanking Lin Shu for his explanation. She really didn't think of the answer at first, because she happened to see Lin Shu by her side, so she wanted to ask Lin Shu for advice. After all, she also knew Lin Shu's postgraduate entrance examination score. .

In fact, she was also a little nervous. Although she had heard about Lin Shu's heroic deeds and super high postgraduate entrance examination scores on the Internet, she didn't know if Lin Shu would give her a lecture.

She was really surprised that Lin Shu was able to explain the topic to her so patiently, and his attitude was so gentle.

【Ding! Congratulations player, you have completed the requested task of NPC passer-by Jiang Shan: Reward 1. Passer-by Jiang Shan's favorability +5; 2. Experience +580; 3. Gold coins +58. 】

"It's okay, it's a small matter, you're welcome."

Lin Shu was very happy. It was so simple to earn such experience points at once, which was not too bad compared to running three kilometers in the morning with him.

The key point Lin Shu discovered that this Huaqing junior girl still has a lot of wool to pull out, because in Lin Shu's opinion, the calculus mean value theorem just now proved the problem is not difficult, but since the junior girl doesn't know, then it is not difficult It proves that I may not be good at high mathematics, and I have not thoroughly understood many knowledge points.

Lin Shu thinks that this junior is probably not a genius.

Lin Shu didn't know that it wasn't that this question was easy, but that in his opinion, this proof question was not difficult. This was because he had already grasped the content and knowledge of this aspect, so no matter how the question type changed, , he didn't find it difficult.

"Is there anything else you don't understand?"

Lin Shu asked a question.

It seemed that there was no lack of wool around him, only the eyes to see it.

Now that you have found a sheep, you can ask more questions if there is any wool to gather.

Jiang Shan was very surprised, she stared straight at Lin Shu, she didn't expect Lin Shu to be so enthusiastic, no, Lin Shu should be like this.

You must know that she knows that Lin Shu has always been chivalrous and brave, and he is really a very kind person.

Now, Jiang Shan really realized that Lin Shu was so kind and enthusiastic in private, which really surprised her. The approachability and tenderness of the book.

Jiang Shan quickly turned over another question for Lin Shu to explain.

"This question is simpler, dy/dx=(xy^2-cosxsinx)/(y(1-x^2)), y(0)=2 find y."

"You first consider the equation: ydy/dx=xy/(1-x), separate variables to get dy/y=xdx/(1-x)=-d(1-x)/[2(1-x)] , the integral obtained lny=-(1/2)ln(1-x)+lnC=ln[C/√(1-x)], so y=C/√(1-x), and then Replace any constant C of x with the function u of x, and then take the derivative of x: dy/dx=[(du/dx)/√(1-x)]+[ux/√(1-x)], and then you You can get u(du/dx)/(1-x)+xu/(1-x)=xu/(1-x)-cosxsinx/(1-x), so udu/dx=-cosxsinx, Separate variables to get udu=-cosxsinxdx=cosxd(cosx), and integrate to get u/2=(cosx)/2+C/2, so u=cosx+C..."

"In this way, the general solution y=(cosx+C)/√(1-x) is obtained, and the initial condition y(0)=2 is 2=1+C, so C=1, so the special solution is: y=( cosx+1)/√(1-x)."

Jiang Shan watched Lin Shu give her a detailed lecture, and stared at Lin Shu closely.

Forgive Jiang Shan for asking for advice sincerely at the beginning, but she was still a little distracted by such a handsome senior giving her a lecture.

The tone of voice is gentle, the skin is good, the key point is that the bridge of the nose is so straight...

And serious Lin Shu, really handsome!

It turns out that Lin Shu is even more handsome than the Internet. I don’t know if Lin Shu is single. It seems that there are no friends of Lin Shu on the Internet. I don’t know if Lin Shu like this will fall in love. If he is in love, what kind of girl will he like? What kind of character would Lin Shu like best?

Jiang Shan's thoughts spread out in an instant, and countless thoughts proceeded as quickly as mathematical derivation formulas.

Lin Shu frowned slightly. He didn't know whether it was Jiang Shan who didn't listen carefully to his lecture, or he made it a little complicated, with a strange look in his eyes, and asked, "Are you still not clear?"

Jiang Shan was taken aback and came back to her senses.

Lin Shu wasn't impatient either. After all, he was wool. Maybe he spoke too fast, so he said, "Then I'll tell you again."

Damn!

Do you want to be so warm!

Jiang Shan didn't dare to be distracted anymore, but her heart was already very nervous. She began to listen to Lin Shu's lecture carefully, and her eyes were also focused on the formula deduction on the draft paper. She dared not disappoint Lin Shu's intentions.

"understand?"

"understood."

Jiang Shan nodded, she really understood, Lin Shu explained it in detail.

【Ding! Congratulations, player, you have completed the requested task of NPC passer-by Jiang Shan again: Reward 1. Passer-by Jiang Shan's favorability +2; 2. Experience +580; 3. Gold coins +58. 】

Looking at Lin Shu, Jiang Shan felt from the bottom of her heart that those comments on the Internet were not good enough to describe Lin Shu. This feeling was like meeting her idol and discovering that the idol cared about her very much. It was really amazing.

Although Jiang Shan didn't pay much attention to Lin Shu, but now that a handsome and gentle senior like Lin Shu is giving her a lecture, she will inevitably have some different thoughts in her heart.

For some reason, before Lin Shu could say anything, Jiang Shan took the initiative to ask Lin Shu another question.

She can guarantee that she really doesn't understand, and she sincerely asks the question. Of course, the reason is more because such an opportunity is really rare, and Lin Shu's speech is really good.

In fact, she is really bad at high mathematics, but I don't know what happened. Many students in the class are very used to the teacher's skipping lectures. She really didn't keep up with the content of the class, and it was very difficult for her to follow.

Now that she finally has such a good senior to give her detailed lectures, she naturally cherishes it.

Lin Shu suddenly felt that Huaqing University was not full of talented academic masters, it seemed that there were also scumbags.

He didn't know if the passer-by student in front of him was a scumbag, but at least he was really bad at high mathematics, and he really didn't think these two questions were difficult.

Of course, Lin Shu would not refuse the junior girl's inquiry, after all, they are all experience points!

"This question is actually similar, xydx+(2x^2+3y^2-20)dy=0, y(0)=1 Find y. Multiply both sides of the original formula by the integral factor y to get xydx+(2xy+ 3y^5-20y)dy=0. Since P/y=4xy=Q/x, (1) is a full differential equation, so the general solution is..."

【Ding! Congratulations to the player, you have continued to complete the requested tasks of NPC passer-by Jiang Shan: Reward 1. Passer-by Jiang Shan's favorability +1; 2. Experience +580; 3. Gold coins +58. 】

【Ding! Congratulations to the player, you continue to complete the requested task of NPC passer-by Jiang Shan: Reward 1. Passer-by Jiang Shan's favorability +1; 2. Experience +580; 3. Gold coins +58. 】

【Ding! Congratulations, player, you continue to complete the requested tasks of NPC passer-by Jiang Shan...]

Lin Shu directly explained several questions to Jiang Shan, earning a lot of experience points.

Lin Shu even wondered if he could go for training if he helped people give lectures and earn experience points, but doing training might become his own job, and it should be the same as completing tasks before.

Because Lin Shu still had class in the morning and had to go to class, naturally he couldn't stay in the library all the time, so he said directly to Jiang Shan, "Sorry, I still have to go to class, so I can't give you any more questions."

"Senior, can I add you on WeChat?"

Jiang Shan looked at Lin Shu expectantly. How could such an approachable senior who was willing to give lectures not impress her? She liked it.

The key is really too warm.

Lin Shu thought for a while, nodded, and said, "Sure, you can ask me later if you don't understand anything?"

"You can ask me anytime."

Very warm senior.

Lin Shu is really a warm man!

Jiang Shan thought so and nodded.

In Lin Shu's opinion, such a school girl asked him if he didn't understand. Although it was not as good as the 20-hour online hang-up experience artifact, but the school girl's sincere study mission was actually taking the initiative to pull out her wool for him, even He doesn't need to take the initiative to squeeze it, which makes him feel very happy.

What a considerate fat sheep!

Thanks for the 100 coins rewarded by Dandan Bandits! ! Thanks! !